Process of melting metal chips and apparatus therefor.



W. F. PRINCE. Pnooss or MBLTING METAL mms AND APPARATUS THEBBPOR.

` PPLOATION FILBI! HOV.13,190H l 935,686. Patented Oct.5,1909.

y4cv

Qclnps. The chips may be used without any UNITED STATES PATENT OFFICE.

WALTER F. PRINCE, OF ELIZABETH, NEW JERSEY.

POCESS 0F MELTING METAL CHIPS AND APPARATUS THEREFOR.

To all whom it may concern:

Be it known that I, iVm/run li. PinNcn, a citizen of the United States, residing at Elizabeth, county of Union, and State of iNew Jersey, have invented certain new and useful Improvements in Processes of Meltin 'Metal Chips and Apparatus Therofor, fait?7 described and represented in the followingspecification and the accompanying -`drawings, forming a part of the saine.

. these have proved unsatisfactory or uncommereial, on account of the results obtained or the cost.; V

In accordance with my invention, I lill the chips into sheet metal casings of such character that the heat requiredtol meltthe casing is nsidyerably greater than that required to melt the cast iron chips, so that., in a furnace, the chips will beheated through the casings 4and brought into a 'pasty or semi-fluid state before the direct flame comes into contact with them by the melting of the casings. I preferably use wrought ironcyl-v inders of'convenient length, and melt the chips as lJari; o'f a cupola charge, stacking tfhelcylii ers, one on the other in the cupola charge. The transmissionpf heat through the casings brings the into condition toreadily melt down with ythe rest of the cupola charge. The whole body of material in the furnace, therefore, settles down evenly,

.11nd, as the charging on top iscontinued, casings are added at thetop and ll'ed with ux, yor a fiux'may'be mixed with the chips to reduce the meltin point, and an in re` dients required may ge mixed with trie c lips to give the mixtures of melted iron desired. The casings t-hus form mixers in which the desired mixture of ingredients and their uniform distribution can be secured most conveniently and eilieiently.

In the accompanying drawing forming a part of this seoification, I have shown for the purpose o illustration a cupola charged with the chips. added to a regular charge, in accordance with the preferred method of carrying out my invention.l cmd the invention wlhmnw be explained in connection with Specification of Letters Patent.

Application tiled November 13, 1808.

'atonicd Het. 5, 1909.

serial No. 462.357.

this drawinp4 and thc features forming the invention then specilically pointed out in the claims.

ln the drawing, which is a vorLixal central section of a cupola broken away at the top, A is the cupola which is shown as ot' a coninion forni and charged in the usual manner, except for thil chip casinos and their contents, a being the usual clay bed, o the sur'- `cess-ive bodies of coke, and r: the successivo bodies of iron to be melted lu the middle of the cupola are'thc rasings 1() containing the cast iron chips 1l, these easings boing;r preferably wrought iron c asings of from No. i8 tdrNo. 24l gage, according to thc heal to which The casings are subjected, and comen iently from twelve to twenty` inches in diameter and from three to four feet long, althougliitwvill be understood that these diinensions maybe varied. The cas-ings may be open end cylindc'rs, as shown, or may he closed at one end, so as to hold the chips indcpcndently ot' stacking the casings.r or may be closed at both ends after filling.

`ln charging the cupola, the chips are prei'- erably filled into the casings during rharging, the bottom casing l0 being pnt into the cupola, preferablyY above thc blast openings d, as shown, if the chips forni only a part of a regular charge, so as to avoid the chips melting down before the rest of the charge, and lilled with the chips, the cupola then charged to the top of this casing, and the second casing 10 added and filled with chips, the charging continued, and so on upward to the charging door. As the charge melt-s down with the casings and chips, the charging is continued, casings and chips heing added at the top. Only one stack of chip 'asin s is shown, but any number of slacks may )e used in thezcupola, acoordin to thc result desired. Any other method o chargin may be used, however.

t is to be understood that the invention is not to be limited to the particular form of furnace shown but may be carried out in an apparatus of any suitable form, and that the casin s of chips may be melted alone in a suita le eupolabr ot er furnace, instead of in a regular furnace e large.

Although theinvention is intended especiali for treating iron chips, it may he a plie to and includes the treatment of sma l pieces o1' dust bf other metals, the casings' bciug made of suitable metal to secure the res salts desired.

Wlml l cluini isz-- l. 'lhe method of melting iron chips I4nd the like. which consists in pucking the chips into cusings lmring :l sntllciently higher melting point tlmn thc chips so that the chips ure incltcil hy heut transmitted through the musings het'ore thc rusings are melted, und melting` the rnsings und chips in it suituhle furnace.

2. 'lhc method of melting iron chips und thi lilie, which consists in packing the chips into rusings hau-ing n sullciently higher lncltinlgr point tlmn the chips so thut the chips :irc melted hy heut lrunsmitted through thc cusings hcfore thc cusings ure melted, und melting the (fusings und chips as part ot' the chin-re of a melting furnace.

il. 'lhe method of preparing iron chips und the like for melting, which consists 1n packing the chips into cusings having u suf- Iicicntly higher melting point than the chips for the melting of the chi is by heut trunsmttcd through the musings eforc the cusings nrc melted.'

4. The method of prepurin iron chips und the like for melting, whici consists 1n charging it mcltin r furnace and stacking one on the other in t ie churge successive chi containing rusings of metul having a sufi?- ricutly higher melting point thun the chipsfor llnl melting of the chips by heut transmitted through the cnsings before the casings are melted.

5. The method of prcparin iron chips nml the like for melting, whici consists 1n Inn-ging n inciting furnace, stacking one on the other in the charge successive tubular rusings of metal lmvingI u sufficiently hi her melting point than the chips for theme ting et the chips by heat transmitted through thc cus-ings and having open ends, and filling the successive cusings Wi h chips in charging the turnuce.

(i. A conluiner for melting iron chips or the like, consisting of a easing of thin sheet metal haring u melting point sutlieiently higher thun the chips to be melted, so that thcchips muy he melted by heat transmitted through the cus-ings before the cusings are melted.

7. A cupoln furnace containing a char e of iron und fuel for melting andwithin tl'iie charge u scricsrof cnsings mounted one upon the other und containingl iron chips for re melting, suid cusings being of metal of n sufficiently higher melting point than the chips for the melting of the chips by heut transmitted through the casings.

In tcstimon whereof, I havelhereunto set mv hund` in t le presence of two subscribing l witnesses.

WA LTER F. PRINCE.

lVitncsscs:

J. A. (in wns, C. J. Snwrnu. 

